I made the app with a friend. We are not a company looking to make millions - we are amateur astronomers and we make apps in our spare time. We think we have a great observing tool we’d like to share.

The App provides a catalogue of hundreds of northern and southern hemisphere Double Stars that can be filtered by your location, date, time and your equipment - for both binoculars and telescopes. It even has naked eye doubles suitable for rural or urban observers. Rather than find Double Stars from a book or chart let the App create a unique list just for you based on what you can see.

Once you have filtered the catalogue to your location and equipment, Double Stars can be added to a Sky Tour. The conventional Double Star data is fully loaded (Magnitudes, Separation, Positive Angle etc).

The App also generates Smart Tours (think iTunes Smart playlists) for wide pairs, tight doubles, colour doubles etc - all based on what you can theoretically see tonight. The App helps you locate each Double Star with RA & Dec as well as interactive Alt Azimuth coordinates.

Furthermore, based on the information entered about your scope it will even suggest an eyepiece to give you the best chance of splitting each Double Star.

The Sky Tour is viewed using a variable red ‘night vision’ mode that we previous trialled successfully on one of our other apps (‘Night Notes’). A Location Assistant helps locate the star using its live position if you don’t have a computerised mount. Try strapping your iPhone to your scope (with an iPhone running armband) to create a low cost GoTo finder!

We carried out extensive testing over Winter some willing volunteers. Their input has been invaluable and the app is now greatly improved thanks to their help. We think this will be a great App for amateur Double Star fans to plan and execute successful observations.

Finally, if you like it, please leave a review on the AppStore and then tell your friends! Happy splitting!

Folks - lol - this program rocks!!!! Apparently the app already siftes through wide and tight pairs for you. Enter in your scope info abd it recommends an ocular I kid you not. Do the tour thing and its got this nice red color of the fonts and such kinda matches my GOTO hand control glow. That every double is illustrated in accompanying diagram is wild. Worth far more than the buck they r charging. Ida payed $10.00.

This is THE doublestar observers app and NO Sky Safari isnt doing what this app does.

I used this app at the telescope last night. With the full moon out, it was the perfect night for doubles. I really like the information the app provides and how it is laid out. It would be nice though to have the colors (spectral classes) of the component stars.

I used this side by side with Sky Safari, since with SS I can go straight to a map to locate the star. And for many of the doubles, you can't beat SS having Jim Kaler's marvelous descriptions.

So I don't see this (yet) replacing Sky Safari, but it is an excellent complement to go along with it. The app is certainly a worthy addition to my collection of astronomy apps and worth more than the nominal charge.

Aw shucks you guys. I'm blushing. I so pleased you all love the app. We took a lot of time and effort, and Richard (who does the programming) put his heart into it. I'd be massively greatful if you can leave a review on the AppStore.Keep on splitting!

I just downloaded the App and this is exactly what I've been looking for.

Because this App can't slew the telescope, it would be nice to have someway to connect with SkySafari. How about a feature to generate an observing list for SkySafari? If it is not easy, how about a button to copy the name of the star to the clipboard so that we can paste the name to the search forms in other apps?And I cannot find some names of binaries used by double stars in SkySafari such as Nu A-B Sco. I'm not sure but is there more common name for such a star?

Denimsky - you're 100% correct. The icons in the catalogue screen signify the stars properties, either colour or part of a multiple system. Orange for Yes, grey for No. These indeed relate the the Smart Tours. The three other symbols- eye, binoc, scope relate to the filters you have entered.

Have you noticed that the symbol for PA is generated for each star based in its magnitudes and positive angle? Richard was VERY happy with that one!

Very nice application! It my my second favorite iOS app after SkySafari Pro. I would like to see a HD version, and if the AL Double Star and Binocular Double Star Club lists could be added as smart tours, well that would be awesome. Thanks!

Seems very nice. Unfortunately since I have a 2nd gen Touch, I can't use the program. Man I'd like to see Sky Safari enhanced to have some of these features....especially the ability to input one's scope parameters to filter doubles able to be split with a given telescope.